Energy-Efficient Multi-Carrier Link Adaptation with Sum Rate-Dependent Circuit Power

Energy-efficient link adaptation is studied for transmission on a frequency-selective parallel AWGN channel. The total power dissipation model includes a circuit power that varies with the sum rate and a power amplifier efficiency that varies with the bandwidth used. The mathematical analysis provid...

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Bibliographic Details
Published in2010 IEEE Global Telecommunications Conference GLOBECOM 2010 pp. 1 - 6
Main Authors Isheden, C, Fettweis, G P
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2010
Subjects
Energy consumption
Equations
IEEE Communications Society
Integrated circuit modeling
Power dissipation
Resource management
Throughput
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Summary:Energy-efficient link adaptation is studied for transmission on a frequency-selective parallel AWGN channel. The total power dissipation model includes a circuit power that varies with the sum rate and a power amplifier efficiency that varies with the bandwidth used. The mathematical analysis provides insight into how the subcarrier rates should be chosen for optimal energy efficiency and suggests a simple fixed-point algorithm that finds the solution in few iterations. Moreover, ways of improving the energy efficiency are discussed based on the dependence on bandwidth and distance between transmitter and receiver.
ISBN:1424456363
9781424456369
ISSN:1930-529X
DOI:10.1109/GLOCOM.2010.5683700